The usual age of onset is between 40 and 50. Interestingly, dry eye may a trigger in BEB. Dry eye also appears to be common in postmenopausal women, which is a common age for the onset of BEB. In a recent survey, approximately 40% of patients stated that their occupation was doing some sort of clerical work. It may be that the eye strain associated with clerical work can cause an abnormal blink reflex, initiating blepharospasms. Approximately 30% of patients report a positive family history.
There are approximately 267 breeds of horses and ponies in the world. Horses are bred with different purposes in mind. Some are bred for pulling carts, working on a farm, po â¦ ny clubs, showing, racing, etc.
There were estimated to be over 175,000 Morgan horses worldwide in 2005. The Morgan is a compact, refined breed, generally bay, black or chestnut in color, although they come in many colors, including several variations of pinto. Used in both English and Western disciplines, the breed is known for its versatility.